// Routines to load the FPGA image, and then to configure the FPGA's major
// mode once it is configured.
//-----------------------------------------------------------------------------
-#include "proxmark3.h"
+
+#include "fpgaloader.h"
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
#include "apps.h"
+#include "fpga.h"
+#include "proxmark3.h"
#include "util.h"
#include "string.h"
+#include "BigBuf.h"
+#include "zlib.h"
// remember which version of the bitstream we have already downloaded to the FPGA
-static int downloaded_bitstream = FPGA_BITSTREAM_ERR;
+static int downloaded_bitstream = 0;
// this is where the bitstreams are located in memory:
-extern uint8_t _binary_fpga_lf_bit_start, _binary_fpga_lf_bit_end;
-extern uint8_t _binary_fpga_hf_bit_start, _binary_fpga_hf_bit_end;
+extern uint8_t _binary_obj_fpga_all_bit_z_start, _binary_obj_fpga_all_bit_z_end;
+
static uint8_t *fpga_image_ptr = NULL;
+static uint32_t uncompressed_bytes_cnt;
-static const uint8_t _bitparse_fixed_header[] = {0x00, 0x09, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x0f, 0xf0, 0x00, 0x00, 0x01};
-static const uint8_t _gzip_header[] = {0x1f, 0x8b, 0x08}; // including compression method 0x08 (deflate)
-#define GZIP_HEADER_SIZE sizeof(_gzip_header)
-#define FPGA_BITSTREAM_FIXED_HEADER_SIZE sizeof(_bitparse_fixed_header)
+#define OUTPUT_BUFFER_LEN 80
//-----------------------------------------------------------------------------
// Set up the Serial Peripheral Interface as master
}
//-----------------------------------------------------------------------------
-// Set up the synchronous serial port, with the one set of options that we
-// always use when we are talking to the FPGA. Both RX and TX are enabled.
+// Set up the synchronous serial port with the set of options that fits
+// the FPGA mode. Both RX and TX are always enabled.
//-----------------------------------------------------------------------------
-void FpgaSetupSsc(void)
+void FpgaSetupSsc(uint8_t FPGA_mode)
{
// First configure the GPIOs, and get ourselves a clock.
AT91C_BASE_PIOA->PIO_ASR =
// Now set up the SSC proper, starting from a known state.
AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
- // RX clock comes from TX clock, RX starts when TX starts, data changes
- // on RX clock rising edge, sampled on falling edge
+ // RX clock comes from TX clock, RX starts on Transmit Start,
+ // data and frame signal is sampled on falling edge of RK
AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1);
- // 8 bits per transfer, no loopback, MSB first, 1 transfer per sync
+ // 8, 16 or 32 bits per transfer, no loopback, MSB first, 1 transfer per sync
// pulse, no output sync
- AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
+ if ((FPGA_mode & 0xe0) == FPGA_MAJOR_MODE_HF_READER && FpgaGetCurrent() == FPGA_BITSTREAM_HF) {
+ AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
+ } else {
+ AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
+ }
- // clock comes from TK pin, no clock output, outputs change on falling
- // edge of TK, sample on rising edge of TK, start on positive-going edge of sync
- AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
+ // TX clock comes from TK pin, no clock output, outputs change on falling
+ // edge of TK, frame sync is sampled on rising edge of TK, start TX on rising edge of TF
+ AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
// tx framing is the same as the rx framing
AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR;
// ourselves, not to another buffer). The stuff to manipulate those buffers
// is in apps.h, because it should be inlined, for speed.
//-----------------------------------------------------------------------------
-bool FpgaSetupSscDma(uint8_t *buf, int len)
+bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count)
+{
+ if (buf == NULL) return false;
+
+ AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer
+ AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address
+ AT91C_BASE_PDC_SSC->PDC_RCR = sample_count; // transfer this many samples
+ AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address
+ AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count; // ... with same number of samples
+ AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
+ return true;
+}
+
+
+//----------------------------------------------------------------------------
+// Uncompress (inflate) the FPGA data. Returns one decompressed byte with
+// each call.
+//----------------------------------------------------------------------------
+static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+{
+ if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data
+ compressed_fpga_stream->next_out = output_buffer;
+ compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
+ fpga_image_ptr = output_buffer;
+ int res = inflate(compressed_fpga_stream, Z_SYNC_FLUSH);
+ if (res != Z_OK)
+ Dbprintf("inflate returned: %d, %s", res, compressed_fpga_stream->msg);
+
+ if (res < 0)
+ return res;
+ }
+
+ uncompressed_bytes_cnt++;
+
+ return *fpga_image_ptr++;
+}
+
+//----------------------------------------------------------------------------
+// Undo the interleaving of several FPGA config files. FPGA config files
+// are combined into one big file:
+// 288 bytes from FPGA file 1, followed by 288 bytes from FGPA file 2, etc.
+//----------------------------------------------------------------------------
+static int get_from_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
- if (buf == NULL) {
- return false;
- }
-
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer
- AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address
- AT91C_BASE_PDC_SSC->PDC_RCR = len; // transfer this many bytes
- AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address
- AT91C_BASE_PDC_SSC->PDC_RNCR = len; // ... with same number of bytes
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
-
- return true;
+ while((uncompressed_bytes_cnt / FPGA_INTERLEAVE_SIZE) % fpga_bitstream_num != (bitstream_version - 1)) {
+ // skip undesired data belonging to other bitstream_versions
+ get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
+ }
+
+ return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
+
}
-void reset_fpga_stream(uint8_t *image_start)
+static voidpf fpga_inflate_malloc(voidpf opaque, uInt items, uInt size)
{
- fpga_image_ptr = image_start;
+ return BigBuf_malloc(items*size);
}
-uint8_t get_from_fpga_stream(void)
+static void fpga_inflate_free(voidpf opaque, voidpf address)
{
- return *fpga_image_ptr++;
+ BigBuf_free(); BigBuf_Clear_ext(false);
+}
+
+
+//----------------------------------------------------------------------------
+// Initialize decompression of the respective (HF or LF) FPGA stream
+//----------------------------------------------------------------------------
+static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
+{
+ uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
+
+ uncompressed_bytes_cnt = 0;
+
+ // initialize z_stream structure for inflate:
+ compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start;
+ compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_end - &_binary_obj_fpga_all_bit_z_start;
+ compressed_fpga_stream->next_out = output_buffer;
+ compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
+ compressed_fpga_stream->zalloc = &fpga_inflate_malloc;
+ compressed_fpga_stream->zfree = &fpga_inflate_free;
+
+ inflateInit2(compressed_fpga_stream, 0);
+
+ fpga_image_ptr = output_buffer;
+
+ for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
+ header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
+ }
+
+ // Check for a valid .bit file (starts with bitparse_fixed_header)
+ if(memcmp(bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
+ return true;
+ } else {
+ return false;
+ }
}
}
// Download the fpga image starting at current stream position with length FpgaImageLen bytes
-static void DownloadFPGA(int FpgaImageLen)
+static void DownloadFPGA(int bitstream_version, int FpgaImageLen, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
+
+ //Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen);
+
int i=0;
AT91C_BASE_PIOA->PIO_OER = GPIO_FPGA_ON;
return;
}
- while(FpgaImageLen-->0) {
- DownloadFPGA_byte(get_from_fpga_stream());
+ for(i = 0; i < FpgaImageLen; i++) {
+ int b = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
+ if (b < 0) {
+ Dbprintf("Error %d during FpgaDownload", b);
+ break;
+ }
+ DownloadFPGA_byte(b);
}
-
+
// continue to clock FPGA until ready signal goes high
i=100000;
while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) {
* (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
* length.
*/
-int bitparse_find_section(char section_name, unsigned int *section_length)
+static int bitparse_find_section(int bitstream_version, char section_name, unsigned int *section_length, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
int result = 0;
#define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section
uint16_t numbytes = 0;
while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
- char current_name = get_from_fpga_stream();
+ char current_name = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
numbytes++;
unsigned int current_length = 0;
if(current_name < 'a' || current_name > 'e') {
switch(current_name) {
case 'e':
/* Four byte length field */
- current_length += get_from_fpga_stream() << 24;
- current_length += get_from_fpga_stream() << 16;
+ current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 24;
+ current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 16;
numbytes += 2;
default: /* Fall through, two byte length field */
- current_length += get_from_fpga_stream() << 8;
- current_length += get_from_fpga_stream() << 0;
+ current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 8;
+ current_length += get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer) << 0;
numbytes += 2;
}
}
for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
- get_from_fpga_stream();
+ get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
numbytes++;
}
}
return result;
}
-void init_fpga_inflate(void)
-{
- // initialize zlib for inflate
-}
-
-//-----------------------------------------------------------------------------
-// Find out which FPGA image format is stored in flash, then call DownloadFPGA
-// with the right parameters to download the image
-//-----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+// Check which FPGA image is currently loaded (if any). If necessary
+// decompress and load the correct (HF or LF) image to the FPGA
+//----------------------------------------------------------------------------
void FpgaDownloadAndGo(int bitstream_version)
{
- uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
+ z_stream compressed_fpga_stream;
+ uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
// check whether or not the bitstream is already loaded
- if (downloaded_bitstream == bitstream_version)
- return;
-
- if (bitstream_version == FPGA_BITSTREAM_LF) {
- reset_fpga_stream(&_binary_fpga_lf_bit_start);
- } else if (bitstream_version == FPGA_BITSTREAM_HF) {
- reset_fpga_stream(&_binary_fpga_hf_bit_start);
- } else
+ if (downloaded_bitstream == bitstream_version) {
+ FpgaEnableTracing();
return;
-
- uint16_t i = 0;
- for (; i < GZIP_HEADER_SIZE; i++) {
- header[i] = get_from_fpga_stream();
- }
-
- // Check for compressed new flash image format (starts with gzip header)
- if(memcmp(_gzip_header, header, GZIP_HEADER_SIZE) == 0) {
- init_fpga_inflate();
}
- for (; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
- header[i] = get_from_fpga_stream();
+ // make sure that we have enough memory to decompress
+ BigBuf_free(); BigBuf_Clear_ext(false);
+
+ if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
+ return;
}
- // Check for the new flash image format: Should have the .bit file at &_binary_fpga_bit_start
- if(memcmp(_bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
- unsigned int bitstream_length;
- if(bitparse_find_section('e', &bitstream_length)) {
- DownloadFPGA(bitstream_length);
- downloaded_bitstream = bitstream_version;
- return; /* All done */
- }
+ unsigned int bitstream_length;
+ if (bitparse_find_section(bitstream_version, 'e', &bitstream_length, &compressed_fpga_stream, output_buffer)) {
+ DownloadFPGA(bitstream_version, bitstream_length, &compressed_fpga_stream, output_buffer);
+ downloaded_bitstream = bitstream_version;
}
-}
-int FpgaGatherBitstreamVersion()
-{
- return downloaded_bitstream;
-}
-
-void FpgaGatherVersion(int bitstream_version, char *dst, int len)
-{
- unsigned int fpga_info_len;
- char tempstr[40];
+ inflateEnd(&compressed_fpga_stream);
- dst[0] = '\0';
+ // turn off antenna
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- if (bitstream_version == FPGA_BITSTREAM_LF) {
- reset_fpga_stream(&_binary_fpga_lf_bit_start);
- } else if (bitstream_version == FPGA_BITSTREAM_HF) {
- reset_fpga_stream(&_binary_fpga_hf_bit_start);
- } else
- return;
-
-
- for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
- get_from_fpga_stream();
- }
+ // free eventually allocated BigBuf memory
+ BigBuf_free(); BigBuf_Clear_ext(false);
+}
- if(bitparse_find_section('a', &fpga_info_len)) {
- for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
- if (i < sizeof(tempstr)) {
- tempstr[i] = c;
- }
- }
- if (!memcmp("fpga_lf", tempstr, 7))
- strncat(dst, "LF ", len-1);
- else if (!memcmp("fpga_hf", tempstr, 7))
- strncat(dst, "HF ", len-1);
- }
- strncat(dst, "FPGA image built", len-1);
- if(bitparse_find_section('b', &fpga_info_len)) {
- strncat(dst, " for ", len-1);
- for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
- if (i < sizeof(tempstr)) {
- tempstr[i] = c;
- }
- }
- strncat(dst, tempstr, len-1);
- }
- if(bitparse_find_section('c', &fpga_info_len)) {
- strncat(dst, " on ", len-1);
- for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
- if (i < sizeof(tempstr)) {
- tempstr[i] = c;
- }
- }
- strncat(dst, tempstr, len-1);
- }
- if(bitparse_find_section('d', &fpga_info_len)) {
- strncat(dst, " at ", len-1);
- for (uint16_t i = 0; i < fpga_info_len; i++) {
- char c = (char)get_from_fpga_stream();
- if (i < sizeof(tempstr)) {
- tempstr[i] = c;
- }
- }
- strncat(dst, tempstr, len-1);
- }
-}
//-----------------------------------------------------------------------------
// Send a 16 bit command/data pair to the FPGA.
while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete
AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // send the data
}
+
//-----------------------------------------------------------------------------
// Write the FPGA setup word (that determines what mode the logic is in, read
// vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to
// avoid changing this function's occurence everywhere in the source code.
//-----------------------------------------------------------------------------
-void FpgaWriteConfWord(uint8_t v)
+void FpgaWriteConfWord(uint16_t v)
{
FpgaSendCommand(FPGA_CMD_SET_CONFREG, v);
}
+//-----------------------------------------------------------------------------
+// enable/disable FPGA internal tracing
+//-----------------------------------------------------------------------------
+void FpgaEnableTracing(void)
+{
+ FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 1);
+}
+
+void FpgaDisableTracing(void)
+{
+ FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 0);
+}
+
//-----------------------------------------------------------------------------
// Set up the CMOS switches that mux the ADC: four switches, independently
// closable, but should only close one at a time. Not an FPGA thing, but
HIGH(whichGpio);
}
+
+void Fpga_print_status(void) {
+ Dbprintf("Currently loaded FPGA image:");
+ Dbprintf(" %s", fpga_version_information[downloaded_bitstream-1]);
+}
+
+int FpgaGetCurrent() {
+ return downloaded_bitstream;
+}
projects / proxmark3-svn / blobdiff